OK, this is a really simple one and yes you could use a juicer. But... the easiest way to juice a lemon half is, to me, to put it in a small plastic net bag that some veggies came in - for instance shallots in the little red netting bags - and then squeeze by hand. No seeds get through.
Follow-Up Postings:
RE: Use net veggie bags to squeeze lemons and avoid seeds
great use for recycling those plastic nettings! thanks. I've also read you can tie them all up in a tight ball and use them as a scouring pad. I wrote a page on useful tips for the home.
